Move admin-pack recipe to admin-meta (#1061)

Author: nicolas-grekas

api-platform/admin-pack/1.0/assets/js/admin.js renamed to api-platform/admin-meta/1.0/assets/js/admin.js

@@ -0,0 +1,7 @@
+{
+    "copy-from-recipe": {
+        "assets/": "assets/",
+        "config/": "%CONFIG_DIR%/",
+        "templates/": "templates/"
+    }
+}

api-platform/admin-pack/1.0/config/routes/api_platform_admin.yaml renamed to api-platform/admin-meta/1.0/config/routes/api_platform_admin.yaml

@@ -1,8 +1,3 @@
 {
-    "copy-from-recipe": {
-        "assets/": "assets/",
-        "config/": "%CONFIG_DIR%/",
-        "templates/": "templates/"
-    },
     "aliases": ["api-admin", "api-platform-admin", "react-admin"]
 }